Display screen or portion thereof with an animated graphical user interface



FIG. 1 is the first image in a sequence for a display screen or portionthereof with an animated graphical user interface showing the newdesign.

FIG. 2 is the second image thereof; and,

FIG. 3 is the third image thereof.

The appearance of the animated user interface sequentially transitionsbetween the images shown in FIGS. 1-3. The process or period in whichone image transitions to another forms no part of the claimed design.The outer broken-line rectangle shows the perimeter of a portion of adisplay screen and forms no part of the claimed design. The remainingbroken lines show features of the graphical user interface and form nopart of the claimed design.

CLAIM We claim the ornamental design for a display screen or portionthereof with an animated graphical user interface, as shown anddescribed.